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  • industrial

3,7-Dimethyl-2-methylene-6-octenal

CAS 157256-27-4

Also registered as 1 other CAS number

22418-66-2

3,7-Dimethyl-2-methylene-6-octenal chemical structure

Concern score

Not assessed — no hazard data yet.

3,7-Dimethyl-2-methylene-6-octenal in plain language

What it is

On cosmetic ingredient lists it appears as “DIMETHYL-2-METHYLENEOCT-6-ENAL”.

Also known as DIMETHYL-2-METHYLENEOCT-6-ENAL · 3,7-DIMETHYL-2-METHYLENE-6-OCTENAL, (+/-)- · 3,7-Dimethyl-2-methylideneoct-6-enal · 3,7-DIMETHYL-2-METHYLENE-6-OCTENAL, (±)- · (+/-)-3,7-dimethyl-2-methylene-6-octenal · 3,7-DIMETHYL-2-METHYLENE-OCT-6-ENAL

Show all 18 names

3,7-Dimethyl-2-methyleneoct-6-enal · 3,7-Dimethyl-2-methyleneocta-6-enal · 3,7-Dimethyl-2-methylenocta-6-enal · 6-Octenal, 3,7-dimethyl-2-methylene- · 6-​Octenal, 3,​7-​dimethyl-​2-​methylene- · AKOS006271626 · Bergamal · Fagygfpzntylao-uhfffaoysa-n · OCT-6-ENAL, 3,7-DIMETHYL-2-METHYLENE- · Q27281777 · UNII-K0DB1O9KVL · alpha-Methylenecitronellal

What it does

Used in cosmetics as a fragrance ingredient.

  • Perfuming
  • Fragrance
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

Regulation

No restrictions found. 3,7-Dimethyl-2-methylene-6-octenal appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Fragrance.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Fragrance.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for 3,7-Dimethyl-2-methylene-6-octenal. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for 3,7-Dimethyl-2-methylene-6-octenal yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

6 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated 2020-03-19

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →

  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed 3,7-Dimethyl-2-methylene-6-octenal in a product composition. These are source records, not Greenveil catalog products.

Named organisations

2

Typical roles

PerfumingFragrance
See products using 3,7-Dimethyl-2-methylene-6-octenal →